Home / 78,357,931.68-117,538,053.66-29,838,500.40

Finding the Fourth Proportional to 78,357,931.68, 117,538,053.66 and 29,838,500.40

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Solution

The fourth proportional to 78,357,931.68, 117,538,053.66 and 29,838,500.40 is: 44,758,190.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,357,931.68 : 117,538,053.66 = 29,838,500.40 : x
  2. Step 2: Convert to fraction form
    78,357,931.68/117,538,053.66 = 29,838,500.40/x
  3. Step 3: Cross multiply
    78,357,931.68x = 117,538,053.66 × 29,838,500.40
  4. Step 4: Simplify right side
    78,357,931.68x = 3,507,159,261,149,131
  5. Step 5: Solve for x
    x = 3,507,159,261,149,131/78,357,931.68
  6. Step 6: Final answer
    x = 44,758,190.86

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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.