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Finding the Fourth Proportional to 70,779.18, 97,672.83 and 38,945.10

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Solution

The fourth proportional to 70,779.18, 97,672.83 and 38,945.10 is: 53,742.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,779.18 : 97,672.83 = 38,945.10 : x
  2. Step 2: Convert to fraction form
    70,779.18/97,672.83 = 38,945.10/x
  3. Step 3: Cross multiply
    70,779.18x = 97,672.83 × 38,945.10
  4. Step 4: Simplify right side
    70,779.18x = 3,803,878,131.63
  5. Step 5: Solve for x
    x = 3,803,878,131.63/70,779.18
  6. Step 6: Final answer
    x = 53,742.90

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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.