Home / 77,720,147.51-107,208,841.75-50,218,075.76

Finding the Fourth Proportional to 77,720,147.51, 107,208,841.75 and 50,218,075.76

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Solution

The fourth proportional to 77,720,147.51, 107,208,841.75 and 50,218,075.76 is: 69,271,892.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,720,147.51 : 107,208,841.75 = 50,218,075.76 : x
  2. Step 2: Convert to fraction form
    77,720,147.51/107,208,841.75 = 50,218,075.76/x
  3. Step 3: Cross multiply
    77,720,147.51x = 107,208,841.75 × 50,218,075.76
  4. Step 4: Simplify right side
    77,720,147.51x = 5,383,821,736,481,762
  5. Step 5: Solve for x
    x = 5,383,821,736,481,762/77,720,147.51
  6. Step 6: Final answer
    x = 69,271,892.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.