Home / 86,510.30-129,765.45-53,122.10

Finding the Fourth Proportional to 86,510.30, 129,765.45 and 53,122.10

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Solution

The fourth proportional to 86,510.30, 129,765.45 and 53,122.10 is: 79,683.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,510.30 : 129,765.45 = 53,122.10 : x
  2. Step 2: Convert to fraction form
    86,510.30/129,765.45 = 53,122.10/x
  3. Step 3: Cross multiply
    86,510.30x = 129,765.45 × 53,122.10
  4. Step 4: Simplify right side
    86,510.30x = 6,893,413,211.45
  5. Step 5: Solve for x
    x = 6,893,413,211.45/86,510.30
  6. Step 6: Final answer
    x = 79,683.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.