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Finding the Fourth Proportional to 70,381.57, 97,099.54 and 40,168.57

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Solution

The fourth proportional to 70,381.57, 97,099.54 and 40,168.57 is: 55,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,381.57 : 97,099.54 = 40,168.57 : x
  2. Step 2: Convert to fraction form
    70,381.57/97,099.54 = 40,168.57/x
  3. Step 3: Cross multiply
    70,381.57x = 97,099.54 × 40,168.57
  4. Step 4: Simplify right side
    70,381.57x = 3,900,349,669.46
  5. Step 5: Solve for x
    x = 3,900,349,669.46/70,381.57
  6. Step 6: Final answer
    x = 55,417.20

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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.