Home / 77,214,931.70-115,864,387.95-31,781,318.90

Finding the Fourth Proportional to 77,214,931.70, 115,864,387.95 and 31,781,318.90

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Solution

The fourth proportional to 77,214,931.70, 115,864,387.95 and 31,781,318.90 is: 47,689,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,214,931.70 : 115,864,387.95 = 31,781,318.90 : x
  2. Step 2: Convert to fraction form
    77,214,931.70/115,864,387.95 = 31,781,318.90/x
  3. Step 3: Cross multiply
    77,214,931.70x = 115,864,387.95 × 31,781,318.90
  4. Step 4: Simplify right side
    77,214,931.70x = 3,682,323,062,592,267
  5. Step 5: Solve for x
    x = 3,682,323,062,592,267/77,214,931.70
  6. Step 6: Final answer
    x = 47,689,261.41

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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.