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Finding the Fourth Proportional to 70,376.58, 105,019.20 and 64,090.17

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Solution

The fourth proportional to 70,376.58, 105,019.20 and 64,090.17 is: 95,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,376.58 : 105,019.20 = 64,090.17 : x
  2. Step 2: Convert to fraction form
    70,376.58/105,019.20 = 64,090.17/x
  3. Step 3: Cross multiply
    70,376.58x = 105,019.20 × 64,090.17
  4. Step 4: Simplify right side
    70,376.58x = 6,730,698,381.26
  5. Step 5: Solve for x
    x = 6,730,698,381.26/70,376.58
  6. Step 6: Final answer
    x = 95,638.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.