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Finding the Fourth Proportional to 86,650.92, 119,510.28 and 56,445.72

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Solution

The fourth proportional to 86,650.92, 119,510.28 and 56,445.72 is: 77,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,650.92 : 119,510.28 = 56,445.72 : x
  2. Step 2: Convert to fraction form
    86,650.92/119,510.28 = 56,445.72/x
  3. Step 3: Cross multiply
    86,650.92x = 119,510.28 × 56,445.72
  4. Step 4: Simplify right side
    86,650.92x = 6,745,843,802.00
  5. Step 5: Solve for x
    x = 6,745,843,802.00/86,650.92
  6. Step 6: Final answer
    x = 77,850.80

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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.