Home / 64,810.12-89,445.18-40,935.64

Finding the Fourth Proportional to 64,810.12, 89,445.18 and 40,935.64

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Solution

The fourth proportional to 64,810.12, 89,445.18 and 40,935.64 is: 56,495.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,810.12 : 89,445.18 = 40,935.64 : x
  2. Step 2: Convert to fraction form
    64,810.12/89,445.18 = 40,935.64/x
  3. Step 3: Cross multiply
    64,810.12x = 89,445.18 × 40,935.64
  4. Step 4: Simplify right side
    64,810.12x = 3,661,495,688.22
  5. Step 5: Solve for x
    x = 3,661,495,688.22/64,810.12
  6. Step 6: Final answer
    x = 56,495.74

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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.