Home / 72,740.04-100,385.40-48,499.20

Finding the Fourth Proportional to 72,740.04, 100,385.40 and 48,499.20

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Solution

The fourth proportional to 72,740.04, 100,385.40 and 48,499.20 is: 66,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740.04 : 100,385.40 = 48,499.20 : x
  2. Step 2: Convert to fraction form
    72,740.04/100,385.40 = 48,499.20/x
  3. Step 3: Cross multiply
    72,740.04x = 100,385.40 × 48,499.20
  4. Step 4: Simplify right side
    72,740.04x = 4,868,611,591.68
  5. Step 5: Solve for x
    x = 4,868,611,591.68/72,740.04
  6. Step 6: Final answer
    x = 66,931.66

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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.