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Finding the Fourth Proportional to 72,689,733.30, 109,034,599.95 and 52,282,398.90

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Solution

The fourth proportional to 72,689,733.30, 109,034,599.95 and 52,282,398.90 is: 78,423,598.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,689,733.30 : 109,034,599.95 = 52,282,398.90 : x
  2. Step 2: Convert to fraction form
    72,689,733.30/109,034,599.95 = 52,282,398.90/x
  3. Step 3: Cross multiply
    72,689,733.30x = 109,034,599.95 × 52,282,398.90
  4. Step 4: Simplify right side
    72,689,733.30x = 5,700,590,448,487,820
  5. Step 5: Solve for x
    x = 5,700,590,448,487,820/72,689,733.30
  6. Step 6: Final answer
    x = 78,423,598.35

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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.