Home / 99,312.48-137,044.08-56,869.92

Finding the Fourth Proportional to 99,312.48, 137,044.08 and 56,869.92

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Solution

The fourth proportional to 99,312.48, 137,044.08 and 56,869.92 is: 78,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,312.48 : 137,044.08 = 56,869.92 : x
  2. Step 2: Convert to fraction form
    99,312.48/137,044.08 = 56,869.92/x
  3. Step 3: Cross multiply
    99,312.48x = 137,044.08 × 56,869.92
  4. Step 4: Simplify right side
    99,312.48x = 7,793,685,866.07
  5. Step 5: Solve for x
    x = 7,793,685,866.07/99,312.48
  6. Step 6: Final answer
    x = 78,476.40

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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.