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Finding the Fourth Proportional to 92,869.50, 128,159.91 and 53,125.50

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Solution

The fourth proportional to 92,869.50, 128,159.91 and 53,125.50 is: 73,313.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,869.50 : 128,159.91 = 53,125.50 : x
  2. Step 2: Convert to fraction form
    92,869.50/128,159.91 = 53,125.50/x
  3. Step 3: Cross multiply
    92,869.50x = 128,159.91 × 53,125.50
  4. Step 4: Simplify right side
    92,869.50x = 6,808,559,298.71
  5. Step 5: Solve for x
    x = 6,808,559,298.71/92,869.50
  6. Step 6: Final answer
    x = 73,313.19

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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.