Home / 76,707.07-105,853.78-74,443.52

Finding the Fourth Proportional to 76,707.07, 105,853.78 and 74,443.52

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Solution

The fourth proportional to 76,707.07, 105,853.78 and 74,443.52 is: 102,730.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,707.07 : 105,853.78 = 74,443.52 : x
  2. Step 2: Convert to fraction form
    76,707.07/105,853.78 = 74,443.52/x
  3. Step 3: Cross multiply
    76,707.07x = 105,853.78 × 74,443.52
  4. Step 4: Simplify right side
    76,707.07x = 7,880,127,988.51
  5. Step 5: Solve for x
    x = 7,880,127,988.51/76,707.07
  6. Step 6: Final answer
    x = 102,730.14

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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.