Home / 55,637.12-76,779.60-30,487.52

Finding the Fourth Proportional to 55,637.12, 76,779.60 and 30,487.52

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Solution

The fourth proportional to 55,637.12, 76,779.60 and 30,487.52 is: 42,072.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,637.12 : 76,779.60 = 30,487.52 : x
  2. Step 2: Convert to fraction form
    55,637.12/76,779.60 = 30,487.52/x
  3. Step 3: Cross multiply
    55,637.12x = 76,779.60 × 30,487.52
  4. Step 4: Simplify right side
    55,637.12x = 2,340,819,590.59
  5. Step 5: Solve for x
    x = 2,340,819,590.59/55,637.12
  6. Step 6: Final answer
    x = 42,072.98

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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.