Home / 85,326.48-128,055.06-38,612.16

Finding the Fourth Proportional to 85,326.48, 128,055.06 and 38,612.16

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Solution

The fourth proportional to 85,326.48, 128,055.06 and 38,612.16 is: 57,947.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,326.48 : 128,055.06 = 38,612.16 : x
  2. Step 2: Convert to fraction form
    85,326.48/128,055.06 = 38,612.16/x
  3. Step 3: Cross multiply
    85,326.48x = 128,055.06 × 38,612.16
  4. Step 4: Simplify right side
    85,326.48x = 4,944,482,465.53
  5. Step 5: Solve for x
    x = 4,944,482,465.53/85,326.48
  6. Step 6: Final answer
    x = 57,947.81

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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.