Home / 76,099.86-105,017.93-42,109.78

Finding the Fourth Proportional to 76,099.86, 105,017.93 and 42,109.78

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Solution

The fourth proportional to 76,099.86, 105,017.93 and 42,109.78 is: 58,111.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,099.86 : 105,017.93 = 42,109.78 : x
  2. Step 2: Convert to fraction form
    76,099.86/105,017.93 = 42,109.78/x
  3. Step 3: Cross multiply
    76,099.86x = 105,017.93 × 42,109.78
  4. Step 4: Simplify right side
    76,099.86x = 4,422,281,810.08
  5. Step 5: Solve for x
    x = 4,422,281,810.08/76,099.86
  6. Step 6: Final answer
    x = 58,111.56

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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.