Home / 64,739.20-97,108.80-38,430.40

Finding the Fourth Proportional to 64,739.20, 97,108.80 and 38,430.40

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Solution

The fourth proportional to 64,739.20, 97,108.80 and 38,430.40 is: 57,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,739.20 : 97,108.80 = 38,430.40 : x
  2. Step 2: Convert to fraction form
    64,739.20/97,108.80 = 38,430.40/x
  3. Step 3: Cross multiply
    64,739.20x = 97,108.80 × 38,430.40
  4. Step 4: Simplify right side
    64,739.20x = 3,731,930,027.52
  5. Step 5: Solve for x
    x = 3,731,930,027.52/64,739.20
  6. Step 6: Final answer
    x = 57,645.60

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1.5x scale

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.