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Finding the Fourth Proportional to 70,352.40, 97,095.56 and 40,130.80

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Solution

The fourth proportional to 70,352.40, 97,095.56 and 40,130.80 is: 55,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,352.40 : 97,095.56 = 40,130.80 : x
  2. Step 2: Convert to fraction form
    70,352.40/97,095.56 = 40,130.80/x
  3. Step 3: Cross multiply
    70,352.40x = 97,095.56 × 40,130.80
  4. Step 4: Simplify right side
    70,352.40x = 3,896,522,499.25
  5. Step 5: Solve for x
    x = 3,896,522,499.25/70,352.40
  6. Step 6: Final answer
    x = 55,385.78

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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.