Home / 77,634.40-116,502.80-28,386.40

Finding the Fourth Proportional to 77,634.40, 116,502.80 and 28,386.40

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Solution

The fourth proportional to 77,634.40, 116,502.80 and 28,386.40 is: 42,598.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,634.40 : 116,502.80 = 28,386.40 : x
  2. Step 2: Convert to fraction form
    77,634.40/116,502.80 = 28,386.40/x
  3. Step 3: Cross multiply
    77,634.40x = 116,502.80 × 28,386.40
  4. Step 4: Simplify right side
    77,634.40x = 3,307,095,081.92
  5. Step 5: Solve for x
    x = 3,307,095,081.92/77,634.40
  6. Step 6: Final answer
    x = 42,598.32

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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.