Home / 76,628.07-105,748.38-42,637.80

Finding the Fourth Proportional to 76,628.07, 105,748.38 and 42,637.80

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Solution

The fourth proportional to 76,628.07, 105,748.38 and 42,637.80 is: 58,841.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,628.07 : 105,748.38 = 42,637.80 : x
  2. Step 2: Convert to fraction form
    76,628.07/105,748.38 = 42,637.80/x
  3. Step 3: Cross multiply
    76,628.07x = 105,748.38 × 42,637.80
  4. Step 4: Simplify right side
    76,628.07x = 4,508,878,276.76
  5. Step 5: Solve for x
    x = 4,508,878,276.76/76,628.07
  6. Step 6: Final answer
    x = 58,841.08

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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.