Home / 64,780.75-97,030.18-31,430.42

Finding the Fourth Proportional to 64,780.75, 97,030.18 and 31,430.42

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Solution

The fourth proportional to 64,780.75, 97,030.18 and 31,430.42 is: 47,077.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,780.75 : 97,030.18 = 31,430.42 : x
  2. Step 2: Convert to fraction form
    64,780.75/97,030.18 = 31,430.42/x
  3. Step 3: Cross multiply
    64,780.75x = 97,030.18 × 31,430.42
  4. Step 4: Simplify right side
    64,780.75x = 3,049,699,310.08
  5. Step 5: Solve for x
    x = 3,049,699,310.08/64,780.75
  6. Step 6: Final answer
    x = 47,077.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.