Home / 76,701.51-115,044.21-20,547.45

Finding the Fourth Proportional to 76,701.51, 115,044.21 and 20,547.45

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Solution

The fourth proportional to 76,701.51, 115,044.21 and 20,547.45 is: 30,819.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,701.51 : 115,044.21 = 20,547.45 : x
  2. Step 2: Convert to fraction form
    76,701.51/115,044.21 = 20,547.45/x
  3. Step 3: Cross multiply
    76,701.51x = 115,044.21 × 20,547.45
  4. Step 4: Simplify right side
    76,701.51x = 2,363,865,152.76
  5. Step 5: Solve for x
    x = 2,363,865,152.76/76,701.51
  6. Step 6: Final answer
    x = 30,819.02

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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.