Home / 70,505.22-105,705.23-42,418.70

Finding the Fourth Proportional to 70,505.22, 105,705.23 and 42,418.70

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Solution

The fourth proportional to 70,505.22, 105,705.23 and 42,418.70 is: 63,596.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,505.22 : 105,705.23 = 42,418.70 : x
  2. Step 2: Convert to fraction form
    70,505.22/105,705.23 = 42,418.70/x
  3. Step 3: Cross multiply
    70,505.22x = 105,705.23 × 42,418.70
  4. Step 4: Simplify right side
    70,505.22x = 4,483,878,017.32
  5. Step 5: Solve for x
    x = 4,483,878,017.32/70,505.22
  6. Step 6: Final answer
    x = 63,596.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.