Home / 90,117.47-124,362.76-49,281.78

Finding the Fourth Proportional to 90,117.47, 124,362.76 and 49,281.78

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Solution

The fourth proportional to 90,117.47, 124,362.76 and 49,281.78 is: 68,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,117.47 : 124,362.76 = 49,281.78 : x
  2. Step 2: Convert to fraction form
    90,117.47/124,362.76 = 49,281.78/x
  3. Step 3: Cross multiply
    90,117.47x = 124,362.76 × 49,281.78
  4. Step 4: Simplify right side
    90,117.47x = 6,128,817,881.51
  5. Step 5: Solve for x
    x = 6,128,817,881.51/90,117.47
  6. Step 6: Final answer
    x = 68,009.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.