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Finding the Fourth Proportional to 65,275.60, 97,913.40 and 20,903.80

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Solution

The fourth proportional to 65,275.60, 97,913.40 and 20,903.80 is: 31,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,275.60 : 97,913.40 = 20,903.80 : x
  2. Step 2: Convert to fraction form
    65,275.60/97,913.40 = 20,903.80/x
  3. Step 3: Cross multiply
    65,275.60x = 97,913.40 × 20,903.80
  4. Step 4: Simplify right side
    65,275.60x = 2,046,762,130.92
  5. Step 5: Solve for x
    x = 2,046,762,130.92/65,275.60
  6. Step 6: Final answer
    x = 31,355.70

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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.