Home / 61,172.99-84,430.25-39,915.35

Finding the Fourth Proportional to 61,172.99, 84,430.25 and 39,915.35

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Solution

The fourth proportional to 61,172.99, 84,430.25 and 39,915.35 is: 55,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,172.99 : 84,430.25 = 39,915.35 : x
  2. Step 2: Convert to fraction form
    61,172.99/84,430.25 = 39,915.35/x
  3. Step 3: Cross multiply
    61,172.99x = 84,430.25 × 39,915.35
  4. Step 4: Simplify right side
    61,172.99x = 3,370,062,823.91
  5. Step 5: Solve for x
    x = 3,370,062,823.91/61,172.99
  6. Step 6: Final answer
    x = 55,090.70

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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.