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Finding the Fourth Proportional to 65,526.60, 90,510.30 and 54,970.68

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Solution

The fourth proportional to 65,526.60, 90,510.30 and 54,970.68 is: 75,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,526.60 : 90,510.30 = 54,970.68 : x
  2. Step 2: Convert to fraction form
    65,526.60/90,510.30 = 54,970.68/x
  3. Step 3: Cross multiply
    65,526.60x = 90,510.30 × 54,970.68
  4. Step 4: Simplify right side
    65,526.60x = 4,975,412,738.00
  5. Step 5: Solve for x
    x = 4,975,412,738.00/65,526.60
  6. Step 6: Final answer
    x = 75,929.66

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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.