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Finding the Fourth Proportional to 70,637.76, 97,451.91 and 40,417.20

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Solution

The fourth proportional to 70,637.76, 97,451.91 and 40,417.20 is: 55,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,637.76 : 97,451.91 = 40,417.20 : x
  2. Step 2: Convert to fraction form
    70,637.76/97,451.91 = 40,417.20/x
  3. Step 3: Cross multiply
    70,637.76x = 97,451.91 × 40,417.20
  4. Step 4: Simplify right side
    70,637.76x = 3,938,733,336.85
  5. Step 5: Solve for x
    x = 3,938,733,336.85/70,637.76
  6. Step 6: Final answer
    x = 55,759.60

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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.