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Finding the Fourth Proportional to 60,085.60, 90,128.40 and 53,346.40

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Solution

The fourth proportional to 60,085.60, 90,128.40 and 53,346.40 is: 80,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,085.60 : 90,128.40 = 53,346.40 : x
  2. Step 2: Convert to fraction form
    60,085.60/90,128.40 = 53,346.40/x
  3. Step 3: Cross multiply
    60,085.60x = 90,128.40 × 53,346.40
  4. Step 4: Simplify right side
    60,085.60x = 4,808,025,677.76
  5. Step 5: Solve for x
    x = 4,808,025,677.76/60,085.60
  6. Step 6: Final answer
    x = 80,019.60

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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.