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Finding the Fourth Proportional to 70,155.82, 105,230.31 and 25,779.16

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Solution

The fourth proportional to 70,155.82, 105,230.31 and 25,779.16 is: 38,667.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,155.82 : 105,230.31 = 25,779.16 : x
  2. Step 2: Convert to fraction form
    70,155.82/105,230.31 = 25,779.16/x
  3. Step 3: Cross multiply
    70,155.82x = 105,230.31 × 25,779.16
  4. Step 4: Simplify right side
    70,155.82x = 2,712,748,998.34
  5. Step 5: Solve for x
    x = 2,712,748,998.34/70,155.82
  6. Step 6: Final answer
    x = 38,667.48

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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.