Home / 78,317,075.81-108,071,238.35-45,279,454.40

Finding the Fourth Proportional to 78,317,075.81, 108,071,238.35 and 45,279,454.40

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Solution

The fourth proportional to 78,317,075.81, 108,071,238.35 and 45,279,454.40 is: 62,481,989.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,317,075.81 : 108,071,238.35 = 45,279,454.40 : x
  2. Step 2: Convert to fraction form
    78,317,075.81/108,071,238.35 = 45,279,454.40/x
  3. Step 3: Cross multiply
    78,317,075.81x = 108,071,238.35 × 45,279,454.40
  4. Step 4: Simplify right side
    78,317,075.81x = 4,893,406,708,393,199
  5. Step 5: Solve for x
    x = 4,893,406,708,393,199/78,317,075.81
  6. Step 6: Final answer
    x = 62,481,989.50

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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.