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Finding the Fourth Proportional to 70,373.79, 97,113.93 and 40,158.57

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Solution

The fourth proportional to 70,373.79, 97,113.93 and 40,158.57 is: 55,417.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.79 : 97,113.93 = 40,158.57 : x
  2. Step 2: Convert to fraction form
    70,373.79/97,113.93 = 40,158.57/x
  3. Step 3: Cross multiply
    70,373.79x = 97,113.93 × 40,158.57
  4. Step 4: Simplify right side
    70,373.79x = 3,899,956,555.88
  5. Step 5: Solve for x
    x = 3,899,956,555.88/70,373.79
  6. Step 6: Final answer
    x = 55,417.74

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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.