Home / 76,368.03-105,388.55-42,378.81

Finding the Fourth Proportional to 76,368.03, 105,388.55 and 42,378.81

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Solution

The fourth proportional to 76,368.03, 105,388.55 and 42,378.81 is: 58,483.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,368.03 : 105,388.55 = 42,378.81 : x
  2. Step 2: Convert to fraction form
    76,368.03/105,388.55 = 42,378.81/x
  3. Step 3: Cross multiply
    76,368.03x = 105,388.55 × 42,378.81
  4. Step 4: Simplify right side
    76,368.03x = 4,466,241,124.73
  5. Step 5: Solve for x
    x = 4,466,241,124.73/76,368.03
  6. Step 6: Final answer
    x = 58,483.13

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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.