Home / 78,217,698.92-117,331,032.02-20,708,475.71

Finding the Fourth Proportional to 78,217,698.92, 117,331,032.02 and 20,708,475.71

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Solution

The fourth proportional to 78,217,698.92, 117,331,032.02 and 20,708,475.71 is: 31,063,900.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,217,698.92 : 117,331,032.02 = 20,708,475.71 : x
  2. Step 2: Convert to fraction form
    78,217,698.92/117,331,032.02 = 20,708,475.71/x
  3. Step 3: Cross multiply
    78,217,698.92x = 117,331,032.02 × 20,708,475.71
  4. Step 4: Simplify right side
    78,217,698.92x = 2,429,746,825,925,204.50
  5. Step 5: Solve for x
    x = 2,429,746,825,925,204.50/78,217,698.92
  6. Step 6: Final answer
    x = 31,063,900.62

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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.