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Finding the Fourth Proportional to 86,640.84, 119,572.40 and 52,641.50

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Solution

The fourth proportional to 86,640.84, 119,572.40 and 52,641.50 is: 72,650.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,640.84 : 119,572.40 = 52,641.50 : x
  2. Step 2: Convert to fraction form
    86,640.84/119,572.40 = 52,641.50/x
  3. Step 3: Cross multiply
    86,640.84x = 119,572.40 × 52,641.50
  4. Step 4: Simplify right side
    86,640.84x = 6,294,470,028.34
  5. Step 5: Solve for x
    x = 6,294,470,028.34/86,640.84
  6. Step 6: Final answer
    x = 72,650.15

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1.5x scale

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.