Home / 85,476.40-128,228.52-26,312.08

Finding the Fourth Proportional to 85,476.40, 128,228.52 and 26,312.08

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Solution

The fourth proportional to 85,476.40, 128,228.52 and 26,312.08 is: 39,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,476.40 : 128,228.52 = 26,312.08 : x
  2. Step 2: Convert to fraction form
    85,476.40/128,228.52 = 26,312.08/x
  3. Step 3: Cross multiply
    85,476.40x = 128,228.52 × 26,312.08
  4. Step 4: Simplify right side
    85,476.40x = 3,373,959,076.52
  5. Step 5: Solve for x
    x = 3,373,959,076.52/85,476.40
  6. Step 6: Final answer
    x = 39,472.40

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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.