Home / 79,197.12-118,795.64-31,812.18

Finding the Fourth Proportional to 79,197.12, 118,795.64 and 31,812.18

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Solution

The fourth proportional to 79,197.12, 118,795.64 and 31,812.18 is: 47,718.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,197.12 : 118,795.64 = 31,812.18 : x
  2. Step 2: Convert to fraction form
    79,197.12/118,795.64 = 31,812.18/x
  3. Step 3: Cross multiply
    79,197.12x = 118,795.64 × 31,812.18
  4. Step 4: Simplify right side
    79,197.12x = 3,779,148,282.90
  5. Step 5: Solve for x
    x = 3,779,148,282.90/79,197.12
  6. Step 6: Final answer
    x = 47,718.25

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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.