Home / 76,316.25-105,312.75-42,322.05

Finding the Fourth Proportional to 76,316.25, 105,312.75 and 42,322.05

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Solution

The fourth proportional to 76,316.25, 105,312.75 and 42,322.05 is: 58,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,316.25 : 105,312.75 = 42,322.05 : x
  2. Step 2: Convert to fraction form
    76,316.25/105,312.75 = 42,322.05/x
  3. Step 3: Cross multiply
    76,316.25x = 105,312.75 × 42,322.05
  4. Step 4: Simplify right side
    76,316.25x = 4,457,051,471.14
  5. Step 5: Solve for x
    x = 4,457,051,471.14/76,316.25
  6. Step 6: Final answer
    x = 58,402.39

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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.