Home / 85,403,030.40-128,121,134.40-36,880,790.40

Finding the Fourth Proportional to 85,403,030.40, 128,121,134.40 and 36,880,790.40

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Solution

The fourth proportional to 85,403,030.40, 128,121,134.40 and 36,880,790.40 is: 55,328,349.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,403,030.40 : 128,121,134.40 = 36,880,790.40 : x
  2. Step 2: Convert to fraction form
    85,403,030.40/128,121,134.40 = 36,880,790.40/x
  3. Step 3: Cross multiply
    85,403,030.40x = 128,121,134.40 × 36,880,790.40
  4. Step 4: Simplify right side
    85,403,030.40x = 4,725,208,703,616,630
  5. Step 5: Solve for x
    x = 4,725,208,703,616,630/85,403,030.40
  6. Step 6: Final answer
    x = 55,328,349.37

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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.