Home / 76,284.15-105,278.34-42,303.28

Finding the Fourth Proportional to 76,284.15, 105,278.34 and 42,303.28

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Solution

The fourth proportional to 76,284.15, 105,278.34 and 42,303.28 is: 58,381.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,284.15 : 105,278.34 = 42,303.28 : x
  2. Step 2: Convert to fraction form
    76,284.15/105,278.34 = 42,303.28/x
  3. Step 3: Cross multiply
    76,284.15x = 105,278.34 × 42,303.28
  4. Step 4: Simplify right side
    76,284.15x = 4,453,619,094.96
  5. Step 5: Solve for x
    x = 4,453,619,094.96/76,284.15
  6. Step 6: Final answer
    x = 58,381.97

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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.