Home / 62,985.60-86,916.85-39,111.76

Finding the Fourth Proportional to 62,985.60, 86,916.85 and 39,111.76

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Solution

The fourth proportional to 62,985.60, 86,916.85 and 39,111.76 is: 53,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,985.60 : 86,916.85 = 39,111.76 : x
  2. Step 2: Convert to fraction form
    62,985.60/86,916.85 = 39,111.76/x
  3. Step 3: Cross multiply
    62,985.60x = 86,916.85 × 39,111.76
  4. Step 4: Simplify right side
    62,985.60x = 3,399,470,988.02
  5. Step 5: Solve for x
    x = 3,399,470,988.02/62,985.60
  6. Step 6: Final answer
    x = 53,972.19

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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.