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Finding the Fourth Proportional to 99,630, 137,490.08 and 59,345.46

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Solution

The fourth proportional to 99,630, 137,490.08 and 59,345.46 is: 81,897.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,630 : 137,490.08 = 59,345.46 : x
  2. Step 2: Convert to fraction form
    99,630/137,490.08 = 59,345.46/x
  3. Step 3: Cross multiply
    99,630x = 137,490.08 × 59,345.46
  4. Step 4: Simplify right side
    99,630x = 8,159,411,746.31
  5. Step 5: Solve for x
    x = 8,159,411,746.31/99,630
  6. Step 6: Final answer
    x = 81,897.14

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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.