Home / 55,637.04-76,779.12-30,486.56

Finding the Fourth Proportional to 55,637.04, 76,779.12 and 30,486.56

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Solution

The fourth proportional to 55,637.04, 76,779.12 and 30,486.56 is: 42,071.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,637.04 : 76,779.12 = 30,486.56 : x
  2. Step 2: Convert to fraction form
    55,637.04/76,779.12 = 30,486.56/x
  3. Step 3: Cross multiply
    55,637.04x = 76,779.12 × 30,486.56
  4. Step 4: Simplify right side
    55,637.04x = 2,340,731,248.63
  5. Step 5: Solve for x
    x = 2,340,731,248.63/55,637.04
  6. Step 6: Final answer
    x = 42,071.46

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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.