Home / 85,556.64-128,347.02-26,397.12

Finding the Fourth Proportional to 85,556.64, 128,347.02 and 26,397.12

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Solution

The fourth proportional to 85,556.64, 128,347.02 and 26,397.12 is: 39,599.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,556.64 : 128,347.02 = 26,397.12 : x
  2. Step 2: Convert to fraction form
    85,556.64/128,347.02 = 26,397.12/x
  3. Step 3: Cross multiply
    85,556.64x = 128,347.02 × 26,397.12
  4. Step 4: Simplify right side
    85,556.64x = 3,387,991,688.58
  5. Step 5: Solve for x
    x = 3,387,991,688.58/85,556.64
  6. Step 6: Final answer
    x = 39,599.40

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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.