Home / 85,669.94-128,535.65-38,281.07

Finding the Fourth Proportional to 85,669.94, 128,535.65 and 38,281.07

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Solution

The fourth proportional to 85,669.94, 128,535.65 and 38,281.07 is: 57,435.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,669.94 : 128,535.65 = 38,281.07 : x
  2. Step 2: Convert to fraction form
    85,669.94/128,535.65 = 38,281.07/x
  3. Step 3: Cross multiply
    85,669.94x = 128,535.65 × 38,281.07
  4. Step 4: Simplify right side
    85,669.94x = 4,920,482,215.15
  5. Step 5: Solve for x
    x = 4,920,482,215.15/85,669.94
  6. Step 6: Final answer
    x = 57,435.34

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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.