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Finding the Fourth Proportional to 86,970.84, 130,414.14 and 42,545.58

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Solution

The fourth proportional to 86,970.84, 130,414.14 and 42,545.58 is: 63,797.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,970.84 : 130,414.14 = 42,545.58 : x
  2. Step 2: Convert to fraction form
    86,970.84/130,414.14 = 42,545.58/x
  3. Step 3: Cross multiply
    86,970.84x = 130,414.14 × 42,545.58
  4. Step 4: Simplify right side
    86,970.84x = 5,548,545,226.50
  5. Step 5: Solve for x
    x = 5,548,545,226.50/86,970.84
  6. Step 6: Final answer
    x = 63,797.77

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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.