Home / 70,390.47-97,139.01-38,559.50

Finding the Fourth Proportional to 70,390.47, 97,139.01 and 38,559.50

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Solution

The fourth proportional to 70,390.47, 97,139.01 and 38,559.50 is: 53,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,390.47 : 97,139.01 = 38,559.50 : x
  2. Step 2: Convert to fraction form
    70,390.47/97,139.01 = 38,559.50/x
  3. Step 3: Cross multiply
    70,390.47x = 97,139.01 × 38,559.50
  4. Step 4: Simplify right side
    70,390.47x = 3,745,631,656.10
  5. Step 5: Solve for x
    x = 3,745,631,656.10/70,390.47
  6. Step 6: Final answer
    x = 53,212.20

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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.