Home / 85,803,696.40-128,533,220.10-39,680,916.16

Finding the Fourth Proportional to 85,803,696.40, 128,533,220.10 and 39,680,916.16

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Solution

The fourth proportional to 85,803,696.40, 128,533,220.10 and 39,680,916.16 is: 59,441,680.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,803,696.40 : 128,533,220.10 = 39,680,916.16 : x
  2. Step 2: Convert to fraction form
    85,803,696.40/128,533,220.10 = 39,680,916.16/x
  3. Step 3: Cross multiply
    85,803,696.40x = 128,533,220.10 × 39,680,916.16
  4. Step 4: Simplify right side
    85,803,696.40x = 5,100,315,930,562,926
  5. Step 5: Solve for x
    x = 5,100,315,930,562,926/85,803,696.40
  6. Step 6: Final answer
    x = 59,441,680.77

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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.