Home / 85,574.16-128,314.24-26,393.40

Finding the Fourth Proportional to 85,574.16, 128,314.24 and 26,393.40

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Solution

The fourth proportional to 85,574.16, 128,314.24 and 26,393.40 is: 39,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,574.16 : 128,314.24 = 26,393.40 : x
  2. Step 2: Convert to fraction form
    85,574.16/128,314.24 = 26,393.40/x
  3. Step 3: Cross multiply
    85,574.16x = 128,314.24 × 26,393.40
  4. Step 4: Simplify right side
    85,574.16x = 3,386,649,062.02
  5. Step 5: Solve for x
    x = 3,386,649,062.02/85,574.16
  6. Step 6: Final answer
    x = 39,575.60

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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.