Home / 85,580.04-128,338.63-29,404.22

Finding the Fourth Proportional to 85,580.04, 128,338.63 and 29,404.22

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Solution

The fourth proportional to 85,580.04, 128,338.63 and 29,404.22 is: 44,095.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,580.04 : 128,338.63 = 29,404.22 : x
  2. Step 2: Convert to fraction form
    85,580.04/128,338.63 = 29,404.22/x
  3. Step 3: Cross multiply
    85,580.04x = 128,338.63 × 29,404.22
  4. Step 4: Simplify right side
    85,580.04x = 3,773,696,595.81
  5. Step 5: Solve for x
    x = 3,773,696,595.81/85,580.04
  6. Step 6: Final answer
    x = 44,095.52

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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.