Home / 90,648.16-136,040.32-46,312

Finding the Fourth Proportional to 90,648.16, 136,040.32 and 46,312

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Solution

The fourth proportional to 90,648.16, 136,040.32 and 46,312 is: 69,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,648.16 : 136,040.32 = 46,312 : x
  2. Step 2: Convert to fraction form
    90,648.16/136,040.32 = 46,312/x
  3. Step 3: Cross multiply
    90,648.16x = 136,040.32 × 46,312
  4. Step 4: Simplify right side
    90,648.16x = 6,300,299,299.84
  5. Step 5: Solve for x
    x = 6,300,299,299.84/90,648.16
  6. Step 6: Final answer
    x = 69,502.78

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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.