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Finding the Fourth Proportional to 70,903.32, 97,803.30 and 42,203.70

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Solution

The fourth proportional to 70,903.32, 97,803.30 and 42,203.70 is: 58,215.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,903.32 : 97,803.30 = 42,203.70 : x
  2. Step 2: Convert to fraction form
    70,903.32/97,803.30 = 42,203.70/x
  3. Step 3: Cross multiply
    70,903.32x = 97,803.30 × 42,203.70
  4. Step 4: Simplify right side
    70,903.32x = 4,127,661,132.21
  5. Step 5: Solve for x
    x = 4,127,661,132.21/70,903.32
  6. Step 6: Final answer
    x = 58,215.34

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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.