Home / 70,905.84-97,848.10-38,639.76

Finding the Fourth Proportional to 70,905.84, 97,848.10 and 38,639.76

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Solution

The fourth proportional to 70,905.84, 97,848.10 and 38,639.76 is: 53,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,905.84 : 97,848.10 = 38,639.76 : x
  2. Step 2: Convert to fraction form
    70,905.84/97,848.10 = 38,639.76/x
  3. Step 3: Cross multiply
    70,905.84x = 97,848.10 × 38,639.76
  4. Step 4: Simplify right side
    70,905.84x = 3,780,827,100.46
  5. Step 5: Solve for x
    x = 3,780,827,100.46/70,905.84
  6. Step 6: Final answer
    x = 53,321.80

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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.