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Finding the Fourth Proportional to 70,622.56, 97,486.90 and 42,322.78

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Solution

The fourth proportional to 70,622.56, 97,486.90 and 42,322.78 is: 58,422.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,622.56 : 97,486.90 = 42,322.78 : x
  2. Step 2: Convert to fraction form
    70,622.56/97,486.90 = 42,322.78/x
  3. Step 3: Cross multiply
    70,622.56x = 97,486.90 × 42,322.78
  4. Step 4: Simplify right side
    70,622.56x = 4,125,916,621.58
  5. Step 5: Solve for x
    x = 4,125,916,621.58/70,622.56
  6. Step 6: Final answer
    x = 58,422.08

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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.