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Finding the Fourth Proportional to 60,006.40, 90,009.60 and 39,116.80

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Solution

The fourth proportional to 60,006.40, 90,009.60 and 39,116.80 is: 58,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,006.40 : 90,009.60 = 39,116.80 : x
  2. Step 2: Convert to fraction form
    60,006.40/90,009.60 = 39,116.80/x
  3. Step 3: Cross multiply
    60,006.40x = 90,009.60 × 39,116.80
  4. Step 4: Simplify right side
    60,006.40x = 3,520,887,521.28
  5. Step 5: Solve for x
    x = 3,520,887,521.28/60,006.40
  6. Step 6: Final answer
    x = 58,675.20

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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.