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Finding the Fourth Proportional to 77,240.80, 115,666.80 and 50,802.40

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Solution

The fourth proportional to 77,240.80, 115,666.80 and 50,802.40 is: 76,075.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,240.80 : 115,666.80 = 50,802.40 : x
  2. Step 2: Convert to fraction form
    77,240.80/115,666.80 = 50,802.40/x
  3. Step 3: Cross multiply
    77,240.80x = 115,666.80 × 50,802.40
  4. Step 4: Simplify right side
    77,240.80x = 5,876,151,040.32
  5. Step 5: Solve for x
    x = 5,876,151,040.32/77,240.80
  6. Step 6: Final answer
    x = 76,075.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.