Home / 70,445.12-97,211.21-42,166.40

Finding the Fourth Proportional to 70,445.12, 97,211.21 and 42,166.40

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Solution

The fourth proportional to 70,445.12, 97,211.21 and 42,166.40 is: 58,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,445.12 : 97,211.21 = 42,166.40 : x
  2. Step 2: Convert to fraction form
    70,445.12/97,211.21 = 42,166.40/x
  3. Step 3: Cross multiply
    70,445.12x = 97,211.21 × 42,166.40
  4. Step 4: Simplify right side
    70,445.12x = 4,099,046,068.46
  5. Step 5: Solve for x
    x = 4,099,046,068.46/70,445.12
  6. Step 6: Final answer
    x = 58,187.80

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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.